Next, we will expand the training set by also including an equal number of high and low change tiles.
As shown in Table 4, we will select a fixed percentage of high and low change tiles that will double the
number of tiles compared to those selected in the previous section. This will ideally balance the number
of tiles with change and those without relevant change to allow the classification training to create a more
discriminative classifier instead of one that has been over-fitted to the high change data.